Manual Coe Calibration Using The Field Communicator - Hart - Emerson Rosemount OCX8800 Instruction Manual

Instruction Manual
IM-106-880C, OI
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5.5.3 Manual COe Calibration using the Field Communicator -
HART
To perform a manual COe calibration using the 375 Field Communicator, use the following
procedure. If necessary, refer to
tree.
NOTE:
To select a menu item, either use the up and down arrow keys to scroll to the menu item and
press the right arrow key or use the number keypad to select the menu item number.
To return to a preceding menu, press the left arrow key.
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Manual COe Calibration using the Field Communicator -
HART
The Calibration Status should be automatically changed to FlowO2Low and then
ReadO2Low for a period of time. During this period, if an attempt is made to go to the
next calibration step by pressing OK and selecting Start/Next Cal Step, you will be
prompted with Operator step command is not accepted at this time. The Next Cal Step
command is not accepted at this time.
When ready, Calibration Status will stop at the AppO2Hi. Switch off the O2 Low Gas and
switch on the O2 High Gas. Verify the O2 concentration measured matches the O2
HIGH GAS parameter in the Setup. Press OK when ready.
Select Start/Next Cal Step to start applying the O2 High Gas. The time to apply the test
gas is specified by the Gas Time.
The Calibration Status should be automatically changed to FlowO2Hi and then
ReadO2Hi for a period of time. During this period, if an attempt is made to go the next
calibration step by pressing OK and selecting Start/Next Cal Step, you will be prompted
with Operator step command is not accepted at this time. The Next Cal Step command
is not accepted at this time.
When ready, Calibration Status will stop at STOP GAS. Switch off the O2 High Gas. Press
OK when ready. Select Start/Next Cal Step to start purging gas. The time to purge gas is
specified by the Purge Time.
When the Purge step is complete, the Calibration Status will be at IDLE if the calibration
is successful or CAL RECOMMENDED if the calibration has failed. A Calibration Failed
alarm will be set if the calibration has failed.
When calibration is complete. Select Exit Cal to exit the calibration method.
Section 6, Field
Select DIAG/SERVICE from DEVICE SETUP menu.
Select CALIBRATION from the DIAG/SERVICE menu.
Select CAL CONTROL from the CALIBRATION menu.
Select CAL METHODS from the CAL CONTROL menu.
From the CAL METHODS menu, select the type of calibration desired: COe Calibration,
or
In the first Calibration screen, a loop should be removed from automatic control
warning appears. Remove the Hazardous Area OCX 8800 from any automatic control
loops to avoid a potentially dangerous operating condition and press OK.
Section 5:
Calibration
Communicator, for the HART menu
April 2017
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